Reproductive seasonality and environmental effects in green turtle (Chelonia mydas) nesting at Penang Island, Malaysia

For species with environmental sex determination, understanding the relationship between reproduction and environmental factors is important for predicting their reproductive output. Here, we study intra-annual variation in green turtle nesting during the 2010–2016 seasons at Penang Island (5°16′28″...

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Published in:Journal of the Marine Biological Association of the United Kingdom 2020-06, Vol.100 (4), p.645-650
Main Authors: Mohd Salleh, Sarahaizad, Nishizawa, Hideaki, Mohd Sah, Shahrul Anuar, Khan Chowdhury, Ahmed Jalal
Format: Article
Language:English
Subjects:
Additives
Annual variations
Aquatic reptiles
Beaches
Chelonia mydas
Climate change
Endangered & extinct species
Environmental changes
Environmental effects
Environmental factors
Eretmochelys imbricata
Females
Low temperature
Nesting
Nests
Precipitation
Reproduction (biology)
Reptiles & amphibians
Seasonal variations
Seasonality
Sex determination
Temporal distribution
Trends
Turtles
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cited_by cdi_FETCH-LOGICAL-c360t-318f134efef95e19cc871b1b9ac5aec2f1955fa4e76847061e10c37a52fea823
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creator Mohd Salleh, Sarahaizad
Nishizawa, Hideaki
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Khan Chowdhury, Ahmed Jalal
description For species with environmental sex determination, understanding the relationship between reproduction and environmental factors is important for predicting their reproductive output. Here, we study intra-annual variation in green turtle nesting during the 2010–2016 seasons at Penang Island (5°16′28″–5°28′15″N 100°10′52″–100°11′55″E), Malaysia. The additive modelling on a monthly-basis number of nests shows that fluctuation in the number of nests relates to temperature in addition to month of year, rather than precipitation. The number of nests tended to be higher in response to higher temperature during March–July, whereas the lower temperature during August–February also tended to result in a relatively higher number of nests. Concentration of nests during March–July resulted from a shorter inter-nesting interval during warm temperatures, whereas relatively low temperatures may homogenize the temporal distribution of the number of nests. This study provides fundamental information for green turtle nesting seasonality in response to environmental change.
doi_str_mv 10.1017/S0025315420000399
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ispartof Journal of the Marine Biological Association of the United Kingdom, 2020-06, Vol.100 (4), p.645-650
issn 0025-3154
1469-7769
language eng
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source Cambridge Journals Online
subjects Additives
Annual variations
Aquatic reptiles
Beaches
Chelonia mydas
Climate change
Endangered & extinct species
Environmental changes
Environmental effects
Environmental factors
Eretmochelys imbricata
Females
Low temperature
Nesting
Nests
Precipitation
Reproduction (biology)
Reptiles & amphibians
Seasonal variations
Seasonality
Sex determination
Temporal distribution
Trends
Turtles
title Reproductive seasonality and environmental effects in green turtle (Chelonia mydas) nesting at Penang Island, Malaysia
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